IDC estimates the enterprise Wi-Fi market grew 5.9% Y/Y in Q4, and 3.7% over the whole of 2015. The firm blames recent slow growth on macro uncertainty and delayed spending ahead of the full availability of (mobile-friendly) Wave 2 802.11ac Wi-Fi systems. The consumer market, where firms like Netgear (NASDAQ:NTGR) and D-Link compete, declined 3.9% in Q4 and 4.8% in 2015.

Cisco (NASDAQ:CSCO) is still the enterprise market's dominant vendor, even if its share has been slipping a bit. IDC respectively assigns Cisco Q4 and full-year enterprise Wi-Fi shares of 45% and 47%, down from 48.1% and 47.8% a year earlier. Cisco's wireless revenue (dominated by Wi-Fi) was flat Y/Y in the company's January quarter at $613M.

#2 HP Enterprise (NYSE:HPE), which acquired Wi-Fi hardware/software vendor Aruba Networks last year for $3B, is estimated to have a 16.9% 2015 share (up 70 bps Y/Y) after factoring sales from both Aruba and HP proper. Thanks in part to Aruba, HPE reported 54% Y/Y networking sales growth for its January quarter, allowing the company's enterprise hardware unit to see positive growth in spite of server, storage, and tech services declines.

#3 Ruckus Wireless (NYSE:RKUS) is estimated to have a 6.9% share, up from 2014's 6.3%. Aerohive (NYSE:HIVE), which has benefited from the FCC's E-Rate program for school broadband connectivity, is assigned a 2.1% share.

In addition to beating Q2 revenue estimates (while slightly missing on EPS), Netgear (NASDAQ:NTGR) has guided for Q3 revenue of $315M-$330M, above a $302.1M consensus. Op. margin is expected to rise to 8.5%-9.5% from Q2's 7.1%.

Also: Netgear's board has authorized a 3M-share buyback program, good for repurchasing 9.3% of shares outstanding at the end of Q2. $76.2M was spent to buy back 2.5M shares in Q2.

Arlo home security camera and Nighthawk router/gateway sales continued providing a lift to Netgear's consumer/retail ops in Q2. EMEA business sales (hurt by a strong dollar) were weak, and the restructuring of Netgear's service provider ops neared completion.